Name: WiFiでArduino Unoを使ってサーバーをPingする (Ping Servers with Arduino Uno with WiFi)
Uploaded: 2021-01-14T10:26:57.000Z
Duration: 13 min 2 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

please go to the line the computer guy dot com In order to view schematics, code and Maur for the projects that you are learning about Welcome back.

So today what I'm going to show you how to do is I'm going to show you how to use the ping of function on Aren't we know, you know, with WiFi.

転換語

So this could be valuable because you can put this, aren't we know, you know, with WiFi on your network, and then you can have it ping different servers or different I P addresses to see if they are reachable.

If they are not reachable, then you can have some kind of alert functionality.

Maybe you print something across an LCD screen, something like that.

So basically what we're going to be doing is we're gonna uses Arlena, you know, with WiFi, we're going to ping servers and then we're going to see what the results are.

Imagine if you were in a help desk environment or some kind of desktops, a poor environment, and you simply need to verify that servers are reachable for your users again.

So I think about like, Salesforce or think about Google or some other kind of internal proprietary server.

A lot of times, you know, somebody unplugs a switch or something stupid happens with the network.

No, you know, with WiFi, you can it constantly pinging all of these different servers, and then it can take the results and put that as a value for variable.

And then you contest against that value with variable to do things again, such as turn on it Red led light sent off in the mail notification something along those lines.

So with that, let's go over the workbench.

I'll show you what's required for this particular project, as faras Hardware is concerned that I will show you the code and then we'll bring it all together to show you how this works.

So the only thing we need for our little project today is simply an Arduino, you know, with WiFi so you don't need any bread boards or or jumper wires or anything like that.

We're simply going to use this baseboard.

We're going to upload the code to it, and then we will simply be able to read through the serial monitor one.

It's saying so with that, let's go over and take a look at the code.

So here's a coat for this particular project, and there really isn't very much to it.

The first thing we need to do is we need to include our WiFi and Naina libraries were going to include that there.

This gives us the functionality of the WiFi stack on the Arduino, you know, with WiFi.

Then we need to give the information for connecting to our local WiFi networks.

So I have a guest network set up as test, and for me, I have no password, So if you have a password, you plug this in and you will put your password here.

So this is all that's required for my WiFi network.

Then we need to create a variable for status.

So this status is going to be used down here for trying to connect to the WiFi network.

We just simply need to creep basically copy and paste and just plug that in there.

The next thing that we're going to do is we're gonna be testing in this particular sketch, we're going to be pinging two different servers.

So one of the servers is we're going to new string.

So if you're going to be pinging a full fledged domain names such as www dot google dot com www dot eli the computer guy dot com www dot salesforce dot com.

For that, you're going to call it a string.

Do make sure you put that upper case s string and then you're going to say the name for the variable.

So for me, I just put this as host in a so strange host name equals.

Remember the double quotation marks, a double quotation marks and then plug in one of the domain name is here and then close the double quotation marks.

Then we're gonna go down, and we're also going to be pinging a local I p address.

So my particular computer here, I'm going to have the Arduino, you know, pinging this and the reason we're gonna do this is I was going to actually show you when I turn off the network connection on this particular computer.

So opinion and I p address You're going to plug in this, so I p a dress.

So I p address space and then whatever you wanna call the variable for the i p address.

So this is simply going to a local server now realize there is no equal here, so basically just local server.

So this is this is the variable named local server and then we're going to put in the I p.

One of the weird quirks with Arduino kicked you something simple Candies on example.

For whatever reason, you can't do period.

40 to come a five put periods in here, you're gonna run into problems.

So swap out the periods for commas and this should work for you close parentheses and then, of course, semi colon.

Then we're going to have create two variables for the results.

So these this is actually going to be what we contest against.

So when when the yard we know Ping's these two different servers.

So the result that we're actually getting back is the millisecond of response times when you see the numbers tan or 300 or whatever else, that's the millisecond of response time.

Um, so when you're pinging and you're getting something back, you will get a number in the positive.

So 10 15 might be 700 Might be really high, but it'll be in the positives.

If you do not get a ping reply back, that's when you will get negative one.

So if you get negative one, then that means you're not getting a reply back.

If you're getting something on the positives, it means you are getting a reply back.

The result for Google is and server result This will be the result for a local server Ping that, Then we're gonna come down.

We're gonna set up the environment as we always do.

First thing I'm gonna do is cereal about began in 9600.

So we're gonna be reading us from the cereal monitor.

So course meaning zero monitor to be up and running then we want to do the wild loop.

Never getting this basically copy and paste.

While status is does not equal connected serial print attempting connector network named test and then status equals And the wife I doubt begin functions of this function feeds E s s I.

And the password tries to connect to the WiFi network, wants it is able to come back to the WiFi network.

From that point on, it will then print out on the serial monitor.

Is, and then we'll print out what the i p addresses again.

This is an important thing when you're doing any kind of work with, Are we know who knows with WiFi or any kind of Arduino, you know, with some kind of network connection is having it print out with the help its I P addresses could be a valuable thing for trying to do some troubleshooting.

So here we go and go into the loop for this particular what we're doing.

So we're going thio create a value for the variable Google results.

So Google result is going to equal WiFi, not Ping host name.

So the host name for Go Up here is www dot google dot com.

So it's going to WiFi Ping www dot google dot com.

Whatever the response time is in milliseconds and that value will be given to the variable Google results.

Then we have a server result y find, not Ping Local server.

Local server is again the i p address 1 72.16 dot 42.5.

So it will ping that and then whatever the middle seconds a response time and that will be given the value of server results.

They were gonna come down here, and we're simply going to print out to the serial monitor.

So google dot com colon space and then the value for Google result print lines of print lights.

Then it will go to the next line local server, Cole and space.